Heeling-machine.



A E. JERRAM, J. GOULDBOURN 8; A. BATES.

Y HEELING MACHINE. v APPLlCATION FILED SEPT. 9. 1910- 9, Patented Oct. 26, 1915.

46 SHEETS-SHEET I.

W n/AK .W/ 71/555259 w u A. E. JERRAM, J. GOULDBOURN & A. BATES.

HEELING MACHINE APPLICATION FILED SEPT- 9' I910.

Patented Oct. 26, 1915.

6 SHEETS-SHEET 2.

A. E. JERRAM, J. GOULDBOURN & A. BATES.

HEELING MACHINE. APPLICATION FlLE D SEPT. 9. 19:0.

' wmw Patented ()ct.26,1915.

6 SHEETS-SHEET 3.

J/V/T/VESSES.

A. E. JERRAIVI, J. GOUL DB OURN & A. BATES. scum: momma.

APPLICATION FILED SEPT. 9| I lo- Llfiyfifig, Patented Oct. 26, 1915.

6 SHEETS-SHEET 6.

J65 ifi X454 IMUVZ'SSESL MC m I To all whom it may concern:

"WHEN smarts PATENT orr cn ENG-LAND, ASSIGNORS "10 UNITEDSH OE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A. CORPORATION OF NEW JERSEY.

HEELING-MAcHIN mamas.

Speeiflcationof Letters Patent.

Patented Oct 2e, ions.

Application filed September 9, 1910. Serial No. 581,171.

Be it known that we, ARTHUR E. J ERRAM, J osnrn GoULnBoURN, and ARTHUR BATES,

subjects of the King of England, residing at Leicester, Leicestershire, England, have 1nvented certain Improvements in Heeling- Machines, of which the following description, in connection with the accompanylng drawings, is a specification, like reference characters on the drawlngs mdlcatmg llke' 'parts in the several figures;

This invention relates to heel nailing machines, including those used for loading heels with nails or other fasteners and those for attaching heels to boots or shoes. As regards its application to machines of the latter 'type, it may be equally well embodied in those in which the nails are driven from inside the shoe as in those in which the nails are driven from the outside, through the heel into the heel seat of the sole.

The object of the invention is to improve the general construction and organization,

of such machines whereby they may be operated with greater certainty, precision and convenience than machines heretofore constructed.

In heel nailing machines there. are provided two work-engaging members arranged to hold the work under pressure during the nail driving operation. It is important that each heel operated upon should be subjected to a uniform degree of pressure regardless of differences in height and it is desirable that such uniform action be obtained with-- out the necessity of a separate adjustment in each case. To this end an important feature of the invention consists in the provision of relatively movable work-engaging 1 members'which may be brought into contact with the opposite sides of the work to measure or preliminarily engage the work, and power operated mechanism arranged to actuate said work-engaging memberswith a predetermined pressure regardless of the thickness of the work held between them.

. As herein shown, and in accordance with anwork-engaging members are automatically unlocked at theconclusion of the driving operation.

In a preferred construction, the work-engaging members may be moved relatively to engage the Work vby the preliminary movement of a manually operated controlling device and, by a further movement of the same device,'automatic mechanism may be thrown into operation'first to exert pressure on the work, then to lock the work-engaging membersagainst relative movement, and finally to unlock said members to permit the removal of the work.

Another feature of the present invention conslsts in arranging the actuating mechanlsm of the nail drivers to impart to the drivers a plurality of nail driving strokes while the work is held under pressure. In heel nailing machines as heretofore constructed the drivers have made only one driving stroke to insert the nails in the work. By imparting to the drivers two or morestrokes, however, as contemplated by the present invention, improved results are obtained and the nails are driven with greater precision than heretofore. One manner of effecting the desired result consists in providing a toggle having one end connected to the drivers and the other end normally free but constructed and arranged to be held stationary when it 'is desired to effect the actuation of the drivers. 'An operative connection may be arranged between the toggle and the driven shaft ofthe machine to break the toggle first on one side and then on the other thereby actuating the drivers each time the toggle is straightened.

In a preferred embodiment of the invention the means for locking the end of the toggle to effect the actuation of the drivers is controlled by the manually operated device, above refcrred to, for relatively moving the work-engaging members into contact with the work, said device also controlling the action of the power-operated mechanism for applying pressure to,tl1e work and for locking the work under pressure. In a construction wherein said power-operated mechanism is employed to actuate the locking means for the pressure applying members,

there may be provided yielding or other lost 16 to the frame of the machine.

motion connection between the mechanism and the locking means to permit the application of the full predetermined pressure be fore the action of the locking means takes place. v

For purposes of illustration we have shown the invention as embodied in a machine wherein the predetermined pressure.

is imparted to the work-engaging members by hydraulic means, but this construction is illustrative only and it is within the scope of the invention to substitute mechanical means if preferred.

These and other features of the invention will be best understood and appreciated from the following description of one example thereof as embodied in a heel attaching machine.

In the accompanying drawings, Figure 1 is a side elevation of a heel attaching machine embodying the present invention; Fig. 2 is a front elevation, of the machine shown in Fig. 1; Fig. 3 is a view, partly in section, showing in detail the rotary valve and its associated mechanism; Fig. 4 is a view,

partly in section, of the pump and the adjacent parts of the machine; Fig. 5 is an enlarged sectional view of the pump; Fig. 6

is an enlarged sectional .view of the lower part of the machine shown in Fig. 1; Fig. 7 is a similar view of the upper part of the machine; Fig. 8 is a plan view of the band clamp and its mounting.

In the machine shown-in the drawings there are two work-engaging members 2 and 4 arranged for relative vertical movement for clamping the work. The lower member 4 is constructed so as to permit nails to be driven from i it into the work by drivers which are arranged to" operate within said lower member and are carried by a plunger 6. The upper member 2 is constructed and arranged to be moved into various positions according to the height of the heel being attached and according to the degree of compression to be exerted upon theheel.

In the machine herein illustrated the upper work-engaging member 2 is attached to the lower end of a plunger 8 mounted for vertical sliding movement in bearings in the head 10 of the machine. The plunger 8 is provided with a recess 12 in which engages one end of a lever .14 fulcrumed on a pivot The other end of the lever 14 is connected with the piston or plunger 18 of the cylinder 20 by a link 22, one end of which is connected to the lever 14 by a pin 24 and the other end scribed hereinafter.

m a recess in said lever acting to maintain normally the lower end of the slot 32 in contact with the pivot 16, as shown in Fig. 7 When the handle 30 is depressed, the two levers 14 and 28 will move simultaneously until the downward movement of the plunger 8 is prevented bythe engagement of the presser member 2 with the work upon the support 4. When the work is thus clamped the hand operated lever 28 is further depressed in opposition to the plunger 34 to throw into action mechanism for admitting fluid under pressure beneath the piston or plunger 18 to exert pressure upon the work through the lever 14 and also to actuate the nail-driving mechanism as will be hereinafter. explained.

The fluid, preferably oil, may be supplied to the cylinder 20 from an accumulator '36 located at the rear of the machine or in any other convenient situation. The fluid is conducted through passages 38, see Fig. 4, from the accumulator 36 to a rotary valve 40 which may be frusto-conical in form as shown in Fig. 3 and preferably balanced. The valve 40 connects with a passage 42 which in one position ofthe valve establishes connection between the accumulator 36 and 'the cylinder 20 by way of the passage 38. In another position the rotary valve closes the passage 38 leading to the cylinder whereby the fluid is locked therein and the work maintained under pressure. In a third position, corresponding to that shown in full lines in Fig. 4, the valve 40 puts the passage 42 in communication with a reservoir 44 through the passage 46 so as to permit the fluid contained in the cylinder 20 to pass therefrom freely to the reservoir, or vice versa, thus permitting unrest-rained movement of the plunger 18.

The rotary valve 40 has secured upon its spindle 48 an arm 50 which is connected by a rod 51 to a lever 52 operated by a cam 54 upon the main shaft 56 of the machine, the lever 52 being fulcrumed at 53 upon a sliding clutch bolt 58 shown in Fig. 6. The clutch bolt 58 at times can be held stationary by mechanism controlled by the hand operated lever 28 so that the cam 54 can thereby efi'ect the changes in position of the rotary valve. At other times the clutch bolt 58 will be free to move permittingthe cam 54 to oscillate the lever 52 idly about its forward end without moving the valve. This mechanism will be more particularly de- The machine is provided with a pump 60, best shown in Fig. 4, which maintains the fluid in the accumulator 36 and the passages leading to the cylinder 20 under substantially uniform pressure. The pump memes comprises a cylinder 64 in which a piston 63 rod 65 and slides to a limited extent, as will presently appear,,in the interior of the piston 63. This sliding motion of the member 66 relatively to the piston is obtained by a between the flange and its seat so that fluid can thus freely pass through the piston. On the up-stroke of the piston the flange 67 will intake valve, closes the passage 39 communieating with the cylinder 64 and the passage 46.: The cylinder 64 passes through the passage 46, an annular passage being provlded around the. outside of said cylinder so that the oil can pass between the cylinder and the reservoir.

The mechanism for controlling the clutch bolt 58 through which the valve 40 is operated; and by which the driver mechanism is controlled will now be described. The pin 24 connecting the ends of the two levers 14, 28 with the link 22 has pivoted thereto a second link which operates a lever 71 pivoted to the frame of the machine at the rear of the work support 4. The lever 71 is provided with a pin 72 arranged to engage a block 73 slidingly mounted upon a rod 74 pivoted at its upper end to a lug on the hand lever 28 at a point below and adjacent to its yielding connection with the pivot 16. During the initial movement of the hand lever.

28, while it is swinging about the center pivot 16 as an axis, no appreciable longi; tudinal movement is imparted to the rod 74, and it is only when the hand lever swings about its rear end, after the work has been preliminarily engaged, that efi'ective longitudinal movement is imparted to the rod 74. The lower end of the rod 74 is provided with a plunger 75, see Fig. 6, arranged for slid ingmovement within a bearing in a projecting boss 77 on the frame of the machine. Pivotally mounted in ears on the plunger 7 5 is a finger 78 having a projection 79 which is at times adapted to be engaged by the extremity of a rod 80 threaded at its upper end into the block 73. A separate bearing 81 in the boss 77 is provided for the lower end of the rod 80. The pivoted finger 7 Son the plunger 75 may be yieldingly maintained in its different positions by providingv fiat portions 82 on its upper end coiiperating with a small spring-pressed pin 83 locatedin a recess in the plunger 75.

The clutch bolt 58, hereinbefore referred to as carrying the cam-operated lever 52 and as being capable either of idle movement as the cam is rotated or of remaining stationary, is arranged for sliding movement in bearlngs 85 in part of the machine frame and is provided with a notch or recess 86. A detent 88 pivoted to the frame at 89 is adapted to engage the notch 86 during a portlon of the cycle so as to hold the clutch bolt from movement. The detent 88 is provided with a tail 90 carrying a spring-tripapawl 92 which engages a projection 94 on the frame of the machine and normally maintains the detent in its inoperative position, that is, out of engagement with the notch 86 of the clutch bolt.

The finger 78 on the plunger 75 is adapted, when the hand lever 28 is depressed in opposition to the spring pressed plunger 34 and turns about its rear end as an axis, to engage the spring-trip pawl 92 and release the same from the projection 94 on the frame. This permits the detent 88 to be swung about its pivot89 by a tension spring 96 and thereby causes the end of the detent to engage in the notch 86 in the clutch bolt 58 and thus lock the latter in position. This will therefore cause the center 53 of the cam-operated lever 52 to be held stationary while the cam 54 will operate to oscillate the lever 52 first to open connection between the accumulator 36 and the cylinder 20, then look the cylinder while under pressure and finally open the discharge passage of the cylinder to the reservoir 44.

The upper end or tail 90 of the detent 88 when moved by its spring 96 engages the finger 78 on the plunger, 75 and turns said finger into a position clear of the springtrip pawl 92. The finger 78 can only be returned to its operative position by raising the hand-operated lever 28 to the top of its stroke, the return ofthe finger 78 being effected by the end of the rod 80 which connected with the block 73. The block 73 is operated by the pin 72 on the lever. 71, the lever 71 being operated by the rod 70. This has the effect of insuring that only one complete cycle of operations can take place before a further tripping of the operating mechanism by thefinger 78.

A stud 100 on the face of-the cam disk 54 is'arranged to contact with av tappet piece 101 pivotally attached to the detent 88, in order to move said detent out of engagement with the clutch bolt 58 atthe-i'time required in the cycle of the machine. The tappet piece ,101 is pivotally connected by a ward movement.

in position by a spring 103 so that when engaged by the stud 1100 it may be rocked slightly in effecting the displacement of the detent 88 sufiiciently to clear itself from the path of the stud. When the detent is displaced the spring 96 is placed under tension and the detent is latched in its initial position by the trip pawl 92 and the stop.94.

The nail-driving mechanism which, as hereinbefore indicated, is also controlled by the hand-operated lever 28, is so constructed and arranged as to deliver two blows on the attaching nails during each cycle of the machine. The nail drivers are carried onv the plunger 6 which is connected at its lower end to one link 105 of a toggle, the end of the other link 106 of the toggle being connected to a second plunger 108 mounted in bearings 110 in the lowerpart of the frame of the machine. The second plunger 108 is normally free to reciprocate in its bearings so that the plunger 106 carrying the nail drivers will remain inoperative, the

toggle straightening and breaking idly.

At times, however, the second plunger 108 may be held stationary, as hereinafter explained, so that the toggle will become operative to lift the plunger 6 and the nail drivers. The joint 112 of the toggle is connected by a connecting rod or pitman 114 with a crank pin 116 on the main shaft 56' and the toggle and the crank are so arranged that, when the lower plunger 108 is fixed, one revolution of the shaft will move the toggle from its broken position into a straightened position and then break iton the other side to a limited degree, after ward straightening the toggle again and finally returning it to its original position,

thereby securing a double reciprocation of the plunger 6 and the drivers for one revolution of the main shaft. The preferred construction for holding the lower plunger 108 stationary consists in providing a horizontally sliding bolt 118 which may be moved under the lower end of the plunger to lock it in its raised position. To operate the sliding bolt there is provided a lever 11.9 pivoted at 120 upon the frame, said lever being connected at its upperend by a link 121 to the cam-operated lever 52. The lever 119 is so arranged that itwill operate the sliding bolt 118 whether or not the plunger 108 is raised synchronously with its for- To this end there is mounted on the lower end of the lever an arm 122 on either side of which are jaws 123 normally drawn together against a pin 124 projecting from the end of the arm by a spring 126. The ends ofthe jaws 123 project beyond the end of the arm 122 and extend, one on each side of the pin 125 on the sliding bolt. -By this construction, when the lever 119 is tu'rned upon its center, one of the jaws will press against the pin 125 thereby imparting a pressure to the bolt 118 which will be efi'ective to slide the latter forwardly and beneath the end of the plunger when the plunger is raised.

The bottom of the plunger 108 is provided with a recess 128 into which fits a corresponding projection 130 on the sliding bolt .118, the projection and the recess being sufficient to hold the-bolt in engagement with the plunger until thetoggle is broken to its utmost extent. As indicated in Fig. 1 the toggle is not broken forwardly to an extent sufiicient to lift the lower plunger 108. At that time the plunger 6 contacts with a stop, not shown, limiting its downward movement so that the plunger 108 will be raised sufficiently to disengage the bolt.

In the operation of the machine hereinbefore described, the shoe and heel are placed between the members 2 and 4 and, by means tent into engagement with the notch 86 in the clutch bolt 58, this being permitted by the cam on the main shaft.

The clutch bolt 58 will now be locked against movement and the cam-actuated lever 52 will be oscillated by its cam 54 to depress the rod 51 and open the valve 40 al lowing the fluid under pressure to flow into the cylinder 20 and raise the piston 18. This will cause the member 2 to descend and exert a predetermined preliminary pressure upon the work regardless of its thickness or density. The cam 54 will then move the valve 40, through the connections hereinbe- [fore described, so that the fluid will be re- F tained in the cylinder, thereby lockingthe two clamping members in their work-compressing position. Finally the valve will be turned so as to allow the fluid to escape from the cylinder and the clamping members may be thereupon moved apart to release the work.

- During this operation of the lever 52 the sliding bolt118 is operated to lock the lower plunger 108 against-movement so that the togglev 105, 106 will no longer work idly but will operate thedrivers, as already explained, twice in one revolution of the main shaft while the members 2 and 4 are looked under pressure.

After the nail-driving operation has been effected and the pressure of the clamping members upon the work has been removed, the sliding bolt 118 is withdrawn to permit the toggle to again move idly. While the toggle is moving idly, the detent 88 is withdrawn from the notch 86 in the clutch bolt leaving the machine in readiness for the inmamas sertion of new work. As already pointed out the movement of the detent 88 into position to secure the clutch bolt from movement has the efiect of tipping the finger 7 8 out of operative relation to the spring-trip pawl 92 on the detent 88. The finger 78 will remain'in this inoperative position until the hand operated lever 28 has been raised to its fullest extent when the rod 80 will engage the projection 7 9 on the finger and thus return it to its operative position ready for the next cycle.

The machine hereinabove described is adapted either for driving the attaching nails from the inside of the shoe into the heel or through the heel into the heel seat of the sole. The work supporting members shown in Fig. 1 are adapted to hold the work for inside nailing and those shown in Fig. 7 are adapted to hold the work for outside nailing.

The clamping device which is intended especially for outside nailing comprises a band clamp 132 adapted to surround par-J tially the rear part of the boot. As shown in Fig. 8, the band clamp is supported on either side by tubular links 133 connected by pivots 135' to the forward ends of'levers 134 pivoted at 138 on a slide member 140. The links 133 are preferably made adjustable by means of screws 142 bearing on rods 144 slidingly mounted in the bore of the links and pivoted at their inner ends to the band clamp. The levers 134 are adjustable simultaneously by means of a screw 148 having a right and left thread. By this means the spread of the band clamp may be varied. The slide 140 to which the levers 124 are pivoted is adjustable toward and from the work in a ideway 150, a rack 151 and pinion 152 being employed for purposes of adjustment. The guideway 150 is formed in a block provided with a stem 154 mounted for vertical and angular adjustment in an arm 160 depending from the plunger 8, the stem 154 being secured in its adjusted position in the arm by a clamping screw 155.

The jack 162 for carrying the work is also made adjustable independently of the band clamp. To this end it is mounted on a slide 163 transversely movable in a substantially horizontal guideway formed in the boss 164 of the arm 160. An adjusting screw 165 may be provided for moving the slide 163.

In order that the band clamp may be readily interchangeable to fit shoes of various sizes, it is provided with a stem 169 received in the bore of a screw 166 adjustable inwardly and outwardly in the slide member 140. The screw 166 is threaded into a recess in said slide and may be adjusted by means .of a milled nut 168 which is held against movement longitudinally of the screw. The mechanism above described is not herein claimed as it forms the subject- No. 9,393, filed February 19, 1915.

Having now described myinvention, what claim as new and desire to secure by Letters Patent of the United States is .matter of our divisional application Serial 7 1. A machine of the class described having, in combination, means for holding a heel under pressure, a gang of drivers and actuating means therefor constructed and arranged to impart to the gang of drivers a plurality of driving strokes terminating at the same point while the heel is held continuously under pressure and then automatically to bring the drivers to rest.

2. A machine of the class described having, in combination, means for holding a heel under pressure, nail drivers, actuating means therefor including a toggle constructed and arranged to be broken alternately on either side of its straightened position whereby two driving strokes may be imparted to the drivers while the heel is held continuously under pressure and mechanism for automatically rendering the toggle inoperative after it has twice operated the drivers.

3. A machine of the class described having, in combination, means for pressing a heel against a shoe, nail drivers, and actuating means therefor including a toggle having a floating end, and movable means for anchoring said end to render the toggle effective.

4. A machine of the class described having, in combination, means for pressing a heel against the heel seat of a shoe, nail drivers, and actuating means therefor in cluding a toggle, movable plungers connected therewith, and movable means for holding one plunger stationary to render the toggle effective.

5. A machine of the class described having, in combination, relatively movable heel pressing members, nail drivers and actuating mechanism for the drivers including a toggle normally inoperative to move the drivers, and a sliding bolt movable to render said toggle effective.

6. A machine of the class described having, in combination, work holding means, nail drivers and actuating mechanism therefor including normally inoperative means for reciprocating the drivers, a slidingbolt, and means for imparting a continuous impulse to said bolt tending to move it to render said normally inoperative means effective.

7. A machine of the class described having, in combination, work holding means, nail drivers and actuating means therefor including normally inoperative means for reciprocating said drivers, a sliding bolt and a lever having a yielding portion for imparting a continuing impulse to said bolt tending to move it to render said normally inoperative means effective.

8. A machine of the class described having, in combination, work holding means, nail drivers, and actuating means therefor including a toggle normally arranged for idle operation, and cam operated means for rendering said toggle eflective.

9. A machine of the class described having, in combination, work holding means, nail drivers, and actuating means therefor including a toggle normally arranged for idle-operation, cam operated means for rendering said toggle efiective, and a manual controlling device for said cam operated means.

10. A machine of the class described, having, in combination, movable work holding means, nail drivers and actuating means therefor including a toggle normally arranged for idle operation, a sliding abutment movable into and out of the path of one end of said toggle to render it effective, a pivoted lever for moving: said abutment, cam operated means for moving said lever and a manually operated device for controlling movement of the work holding means and said latter cam operated means.

11. A machine of the class described having, in combination, means for holding the work under pressure, nail drivers, actuating means therefor including a member mounted for idle reciprocation, and a movable device for engaging said member to render the driver actuating means efl'ective, said device being constructed and arranged to be locked in engaging position.

12. A machine of the class described having, in combination, work supporting means, nail drivers, a toggle for actuating said drivers, :1. reciprocatory plunger connected with said toggle and a sliding boltarranged for locking engagement-therewith.

' 13. A machine of the class described having, in combination, nailing mechanism, a stationary work-engaging member and a relatively. movable work pressing member, means for moving said pressing member into engagement with the work, and power actuated means for efiecting a further movement of said pressing member arranged to exert a uniform pressure regardless of the thickness of the work.

11. A machine of the class'described having, in combination, nailing mechanism, a stationary work-engaging member and a relatively movable work pressing member, means for moving said pressing member into engagement with the work, and power actuated means constructed and arranged to press said member upon the work with a predetermined pressure regardless of the thickness of the work.

15. A heel attaching machine having, in

combination, a nail block, a shoe support arranged for movement from and toward the block, means for moving the shoe support toward the nail block to bring a shoe and heel into preliminary engagement constructed to limit the pressure of such engagement, and means for automatically moving the shoe support toward the nail block to subject the shoe and heel to a uniform pressure prior to the attaching operation.

16. A heel nailing machine having, in combination, a nail block, a shoe support arranged for movement toward the nail block to bring a heel and shoe into preliminary engagement, means for automatically moving the shoe support toward the nail block to subject the shoe and heel to further pressure, and a single device for controlling the preliminary movement of the shoe support and its automatic actuation.

17. A heel nailing machine having, in combination, work pressing members, power operated mechanism for relatively moving said members to exert a predetermined pressure upon the work located between them regardlessof its thickness, and a device to lock said members in such position of pressure.

18. A machine of the class described having, in combination, work pressing members, power operated means for moving said memers toward each other with a uniform pressure and to a final relative position determined by the density of the work located between them, and nail drivin mechanism arranged for automatic operation while the work is so held.

19. A machine of the class described having, in combination, a nail block, a jack, power operated means for moving said jack toward the nail block with a uniform pressure and to a final position determined by the density of, or the resistance offered by, the work located on the nail block, and driving mechanism arranged for automatic operation while the work is held under uniform pressure.

20. A machine of the class described having, in combination, relatively movable pressing members, means for subjecting the same to fluid pressure, a controlling valve, drivers, and a hand operated lever for moving said pressing members into engagement with the work, said lever, by a further movement, effecting automatically the operation of the controlling valve whereby they pressing members are first subjected to fluid pressure, then looked under pressure and finally released, said lever meantime also controlmemes said means including a pump acting by fluid pressure on said pressing member, and drivers working in said nail block.

22. A machine of the class described having, in combination, relatively movable pressing members, a pivoted lever for transmitting pressure to one of said members, a controlling lever movable simultaneously with said first mentioned lever, cam controlled means for regulating the application of pressure'to said pivoted lever and connections between said controlling lever and said cam controlled means for rendering the latter effective.

23. A machine of the class described having, in combination, relatively movable pressing members, power actuating means therefor, a device for regulating the application and removal of pressure by said actuating means, a cam operated lever having a floating pivot and being connected with said regulating device, and a hand lever for moving said pressing member into engagement with the work and also anchoring the pivot of said cam operated lever in order to effect actuation of said regulating device.

24. A machine of the class described having, in combination, anail block and pressing member, means for moving them together to subject heels'of varying heights placed between them'to uniform pressure preliminarily to the nailing operation. said means including a fluid pressure system and an automatic controlling valve therein, and nail drivers arranged to reciprocate in said nail block.

' 25. A machine for operating on heels hav ing, in combination, means for holding a heel, a gang of tools arranged to operate upon a heel so held, and means for imparting to said gang of tools two working strokes to perform a single operation on the heel, each stroke terminating at the same point but having a different starting point.

26. A machine for operating upon heels having, in combination, means for applying pressure to the work, amovable controlling device for saidmeans, and power operated means for moving the controlling device ,including a member having normally an idle movement, a lock for said member, a spring for the lock arranged to be latched under tension at the conclusion of each cycle, and a starting lever by which the lock may be tripped.

27. A machine of the class described having, in combination, nail driving mechanism, a nail block, a pressing member movable relatively thereto, a lever pivoted between its ends and connected at one end to said pressing member, a manually operated lever arran ed to act upon the opposite end of said rst mentioned lever to move said pressing member into engagement with work presented upon the nail block, and means for actuating said driving mechanism arranged to be set in motion by a fur {her movement of said manually operated ever.

i 28.. A machine of the class described having, in combination,- a nail block, a work pressing member movable relatively thereto, a manually operated lever for moving said pressing member toward or away from said nail block, rods connected with said lever at separate points, and power actuating means for said pressing member, one of said rods operating to set in motion said power actuating means when the lever is moved in one direction and the other of said rods acting, when the lever is moved in a reverse direction, to render the subsequent movement of the first mentioned rod effective.

29. A machine for operating upon heels having, in combination, means for applying pressure to the Work, a movable device for controlling the application and removal of pressure by said means, and power operated means for moving the controlling device, including a cam lever having normally an idle oscillation, a locking detent for the lever arranged to be placed under spring tension by the power of the machine, starting lever by which the locking detent may be tripped and so rendered operative.

30. A machine for operating on heels having, in combination, relatively movable heel pressing members, means fonpreliminarily moving one toward the gthei'toimeasure the work, fluid pressure'm'ans for further moving one toward the other to apply a prede termined pressure to the work, means for locking the members so moved rigidly in its -position of pressure, and a gang of tools arranged to operate upon the work While held under pressure.

.31. A machine for operating on heels having, in combination, relatively movable heel pressing members, means for preliminarily moving one toward the other, to measure the Work, a fluid pressure cylinder having a piston connected to one of said members and arranged to be subjected to a predetermined amount of fluid pressure, and means for automatically closing the cylinder to lock the pressing member under pressure.

32. A machine for operating on heels having, in combination, a gang of tools, power actuating mechanism for the tools, cooperating Work-engaging members, one being movable relatively to the other to efi'ect the measuring operation, a manually operated device including a movable clutch tripping piece, said device being arranged in its initial movement to control the measuring movement of a work-engaging member and in its final movement to start the power acanda tuating mechanism through the tripping piece, and means for moving saidpiece into an inoperative position to insure nonrepeating operation of the machine.

33. A machine for operating on heels having, in combination,.a gang of tools, cooperating work-engaging members of which one is power operated, a manually operated device for controlling the measuring movement of a work-engaging member, said de vice being arranged to initiate the power operation of the work-engaging member,

'and means for rendering said device inoperative for this purpose after said operation has been initiated.

34. A machine for operating on heels having, in combination, a gang of power operat'ed tools, cooperating work-engaging members, manually operated means for controlling the preliminary measuring movement of a work-engaging member, said means being arranged to control the starting of the power operated tools and mechanism for rendering said manually operated means inoperative for this purpose after the tools have been started.

35. A machine of the class described having, in combination, a gang of tools, a die block, a pressing member movable relatively thereto, a pressing lever mounted to turn about an intermediate aXis and connected at I one end to said pressing member, a manually operated lever arranged to turn about the same axis to move the pressing lever so as to bring the pressing member into engagement with work between it and the die block, and means for actuating the driving mechanism arranged-to be set in motion by a further movement of said manually operated lever.

36. A machine for operating upon heels, having, in combination, 0 positely arranged pressing members, tools or operating on a heel held by said members, a device constructed and arranged to be moved by the power of the machine during each cycle and to be latched under spring tension when the machine comes to rest, a train of mechanism actuated when said device is moved from its latched position and constructed and arranged to control the movement of one of the pressing members for applying a measuring pressure to the work, a lever manually operable for tripping said device and also setting the tools of the machine in operation,

and means for moving said pressing member farther in the same direction to increase the pressure on the work.

37. A machine for operating on heels, having, in combination, relatively movable heel pressing members, means for preliminarily moving one toward the other to measure the work, fluid pressure means for moving one toward the other to apply a predetermined pressure to the work, an accumulator for supplying fluid, means for locking that member which has been moved rigidly in its position of pressure, and a gang of tools arranged to operate upon the work while held under pressure.

In testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses.

ARTHUR ERNEST JER-RAM. JOSEPH GOULDBOURN. ARTHUR BATES.

Witnesses ELEANOR PYWELL, KATHERINE PENTON. 

